public class Student {
    String studentName;
    int age;

    public  void learn(){
        System.out.println("学生"+this.studentName+"年龄为："+this.age);
    }

    public Student(){
        this.studentName="fsh";
        this.age=52;
    }

    public Student(String studentName, int age) {
        this.studentName = studentName;
        this.age = age;
    }

}
